Mechanism for opening and closing doors.



C. V. SMOCK. MECHANISM FOR OPENING AND CLOSING DOORS.

7 APPLICATION FILED AUG.2I. I916. 1,268,401 Patented June 4,1918.

3 SHEETS-SHEET I.

IN V E N TOR m C/aw/e V fimar/n Attorney c. v. SMOCK. MECHANISM FOR OPENING AND CLOSING DOORS.

APPLICATION FILED AUG-2h I916 Patented June 4, 1918.

3' SHEETSSHEET 2- INVENTOR 004/616 1/ Smock Attov n y c. v. SMOCK. MECHANISM FOR OPENING AND CLOSING DOORS.

APPLICATION FILED AUG.2I. I9I6.

Patented June 4, 1918.

3 SHEETSSHEET 3- INVENTOR Attorney UNITED STATES PATENT OFFICE,

CLAUDE V. SMOCK, OF PORTLAND, OREGON.

MECHANISM FOR OPENING AND CLOSING DOORS.

Application filed August 21, 1916.

To all whom it may concern:

Be it known that I, CLAUDE V. SMOCK, a citizen of the United States, and a resident of Portland, in the county of Multnomah and State of Oregon,have invented certain new and useful Improvements in Mechanisms for Opening and Closing Doors, reference being had to the accompanying draw- 1ngs.-

This invention has relation to certain new and useful improvements in mechanisms for opening and closing doors. v

The primary object of this invention is to provide a device for opening and closing either hanging or slidably supporteddoors by means of a mechanism driven by a motor, the arrangement being such that the motor is started by manual manipulation but is automatically stopped.

Another object is to provide a door opening and closing mechanism which may be operated from a point distant to the mechanism and which also serves as a door locking means.

A .further object is to provide a door opening and closing device of a simple and inexpensive nature and of a compact and durable construction having a starting switch located at a point distant to the operating mechanism permitting the operator to open or close the door with ease, accuracy, and despatch.

A still further object is to provide a garage with an electrically operating system disclosing at all times whenever the garage doors are being opened or closed.

With these and other objects in view, the present invention consists in the combination and arrangement of parts as will be hereinafter more fully described and finally pointed out in the appended claims, it being further understood that changes in the specific structure shown and described may be made within the scope of the claims, without departing from the spirit of the invention.

In the accompanying drawings forming a part of this specification and in which like numerals of referenceindicate similar parts in the several views v Figure 1 shows a portion of a garage equipped with a door opening and closing mechanism embodying my invention, which is shown in a plan view with parts broken away.

Fig. 2 shows an elevational view of the Specification of Letters Patent.

- Patented June 4, 1918.

Serial No. 116,088.

operating mechanism, disclosing the mangle rack as used in my invention in section.

Fig. 3 shows a broken forward portion of the stopping switch and the mechanism used to actuate the same.

Fig. 4 is a section on line 4:, 4 of Fig. 3.

Fig. 5 is a diagrammatic view of the wiring system, showing two points of control.

In my present invention, I provide a door opening and closing mechanism especially adapted to be used in connection with garage doors to the end that an operator may open the garage door without leaving the automobile, the invention including several starting points these points of control being located at suitable and readily accesible points, so that the door may be readily closed as well as opened, the device further serving as a door locking mechanism.

In the drawings, a designates the walls of a garage, 5, the garage roof or ceiling, and 0, the doors which in the drawings are shown as being hingedly connected by means of the hinges 9'.

It should be understood, however, that while my invention comprises a hingedly supported door, a slidably supported door can be operated with equal ,facility.

The operating mechanism as used in my invention includes a mangle rack m having the rack teeth Z which are in the form of two parallel portions connected by means of'the two semi-circular toothed end por-' tions Z as shown in dotted lines in Fig. 1. Surrounding these teeth Z is the upstanding flange n held in spaced relation to said teeth. The mangle as shown is in the form of an oblong member which has a flattened outer face as shown in Fig. 2 and at one end is provided with the pivot pin 5. This mangle rack m is arranged to slide backward and forward upon a preferably horizontally disposed supporting plate 03, this plate beingheld by means of' thebrackets f which are secured to the ceiling or roof of the garage I) at suitable points. As shown, this horizontally held supporting plate (Z is provided at oneend with the rearwardly extending guide arm e upon which is slidably held a sleeve 9.

integer mangle rack m As shown in the drawings, T employa connecting member comprising a rod which by means of a pivot pin 0 is pivotally connected to the sleeve y. [it its rear end this connecting rod 0 telescopes within a tubular member p which has a terminal ear 6 which is connected to the ear by means or a suitable pin this construction being best shown in ldiglfi. As disclosed, the tubular member is provided with the lengthwise err tending slot r within which reciprocates a pin 5, this tubular memher go further being provided with a terminal or outer stop collar a and an intermediately positioned stop collar 22 while interposed between the pin a and pthe terminal collars a and o is a coil spring 6, the pin 8 being held between the convolutions or the spring. By this means, the rod 0 is yieldingly connected. to the member 20.

The forward portion of the spring t holds the doors firm while the doors are closed, while the rear portion or' the spring serves as a shock absorber when the device is started.

in order to reciprocate the mangle rack backward and forward I employ the drivgear 5 which is secured to a. sheave 4, this sheave and gear being revolubly held upon the pendant stub shaft 2,. which extends from a suitable base 3, fixed to the ceiling 5, as shown in Fig. 2. The gear 4 is held in mesh with the teeth by means or the upstanding flange n.

Passing about the sheave 4 is a belt 8 which in turn is operated to pass about an idler pulley or sheave 9 held upon a support 10. At a suitable point within the garage is located a motor 6, which in the present instance is shown and described as an electric motor. This motor is supported upon a shelf 7 the motor being provided with the driving sheaves 4, over which passes a belt 8 in turn passing over an idler sheave 9 as shown in Fig. 1, w This motor 6 is provided with the electric terminals u and o, and connected to these terminals u and o are the suitable electric conductors which are in circuit with the switch so that on manually manipulating the switch-the motor can be started to actuate the driving gear 5 resulting in the mangle rack being driven to start the mechanism.

bracket 3. As shown in Fig. 4, each bracket ends in an ear 2' carrying a bolt 0:, so that these dogsare adjustably'connected to the rod 0.

As shown in Fig. 3, two sets of dogs are employed and these dogs are each of such a length that their lower ends rest against a portion oi the supporting bracket.

The mangle rack on imparts a reciprocating backward and forwardimovement of the rod 0 and located above this red and in the path or": the dogs 3 and y is a four-point stopping switch 11 which is pivotally held to a suitable base 11 and is provided with four outstanding switch arms marked 12, l2, l2", and 12'.

This four-point switch is employed to out oi'l' the circuit and the arms and dogs are so located that the motor is stopped at the proper instant when the door is fully opened and securely closed.

At a suitable point located at a point distant to the garageas at a point adjacent to the driveway, is located a three-point switch 14 in Fig. 1 being disclosed as held within the casing 15, while located within the garage is a second three-point switch 13.

As shown in Fig. 5, the tour-point switch ll is pivotally supported upon a pin 30 for rotation, and has fixed thereto a pair of parallel plates 8 and 9', and adapted, at each partial revolution of the switch to conneet difierent pairs oi the stationary contacts 25, 26 2? and 558, while the three-point switch 13 is pivotally held upon a pivotal support 18, the three-point switch 14 being pivotally held upon a pivotal support 1.

As shown'in Fig. 5, the motor 6 has one of its terminals 'v' connected to a suitable feeder C by means of an electric conduch tor B.

Extending from the terminalu' is the electric conductor A which has one of its ends connected to the terminal 20 and ends in the terminal 21. Extending from the other feeder l) is an electric conductor E which passes through the terminal 30 and ends in the electric terminal 33, located within the. three-point switch 13.

The four-point switch 11 has one of its terminals as the one marked 26 connected by means of the conductor H to the terminal 23 of the three-point switch 14. The terminal 25 is connected by means of the electric conductor F to the terminal 34 of the three-point switch 13. The terminal 27 is connected by means of the electric conductor T to the terminal 31 of the threepoint switch 13, while the remaining ter minal 28 of the four-point switch 11 is in circuit through the electric conductor G ending in the terminal 24 of the three-point switch 14.

The parts being all properly assembled and adgusted, and the doors being open, to

plose the same, the operation will be as folows:

The switches being in position as shown in Fig. 5, the operator, will throw the switch blade 17 so that the terminals 30 and 34 will be electrically connected. This will result in the current passing through the feeder D and the conductor E to the terminal 30, through the blade 17 to the terminal 34, thence through the conductor F to the terminal 25, through the blade 8 to the terminal 28, thence through, the conductor G to the'terminal 24, and from this terminal through the blade 16 to the terminal 21 and then through the conductor A through the motor 6 and then through the conductor B to the feeder C, thus completing the electrical circuit. This will start the door closing movement of the motor.

The dogs y and 3 are arranged to pass -below the arms 12. The first dog y encountering the arm 12, the same will tilt and freely pass below the arm. The second dog 1 being tilted in the opposite direction will encounter the arm 12 in its path and give the switch a turn to break the circuit at the end of the stroke. It will be noted that the dogs y and y are in different vertical planes so that they pass the switch 11 at opposite sides thereof, and the arms 12, 12, 12 and 12" being arranged to extend at right angles to each other, during reciprocation of the dogs in one direction, one dog will engage one of the arms to rotate the switch at one side thereof, andat a return movement of the dogs the other dog will engage another arm to rotate the switch in the same direction.

In opening the door, the operation is reversed, and this is done in imparting a forward movement to the sleeve 9 which is accomplished in throwing and operating the three-point switch to form a new circuit. The switch 11 having been partially rotated in the operation described above, the blade 8" will have connected the contacts 25 and 26, and the blade 9 the contacts 27 and 28. The switch blade 16 of the three-point switch is then rotated so as to connect the contacts 20 and 23, whereupon the current will leave the feeder D and traverse the conductor E, pass through the blade 17 into the conductor F, through the blade 8 of the four-point switch, the conductor H, through the blade 16, through the conductor A to the motor, returning to the feeder C. A movement of the doors to open position will result in a partial movement of the switch 11 by engagement of dog 3 with arm 12, whereby the current will be cut oil and the motor will cease operation. The switch 11 has thus been turned to half revolution so that plate 8 connects terminals 26 and 27 and plate 9 connects terminals 25 and 28.

While I have shown but two points of control, 13 and 14, several additional points of control can be used, so also can an electric light bercut in on the wiring system so that the garage and driveway will be illuminated while the doors are being operated, thus providing a signal disclosing at all times when the doors are being opened and closed.

Having thus described my said invention, what I claim as new and desire to secure by United States Letters Patentis 1. In combination, a pendant stub shaft, a driving gear secured to the lower end of said shaft, a supporting plate, a mangle rack slidably held upon said supporting plate comprising two parallel portions provided with teeth connected by means of two semicircular toothed end portions an upstanding flange surrounding said teeth and held in spaced relttion thereto, said gear being in mesh with said teeth and contacting with said upstanding flange, a connecting rod secured at one end to said mangle rack, a guide arm extending from said supporting plate, a sleeve 9 slidably mounted upon said arm, and connected with said connecting rod, a link pivotally secured to said sleeve 9 having its outer end pivotally secured to a door, and means to rotate said driving gear.

2. A door opening and closing mechanism including in combination, a pendant stub shaft, a driving gear secured to the lower end of said shaft, a mangle rack in mesh with said gear, means for slidably supportnected to said driving gear, means for man'm ally starting said motor means for stopping said motor located in the path of said rod and actuated at the end of its forward stroke, and means for stopping said motor located in the path of said rod at the end of rearward stroke.

3. A door opening and closing mechanism including in combination, a pendant shaft, a driving gear secured to the lower end of said shaft, a mangle rack in mesh with said gear, means for slidably supporting said mangle rack, a tubular member pivotally secured to said rack having a lengthwise extending slot and a terminal collar, a connecting rod having one end telescoping within said tubular member, a pin carried by said connecting rod and extending through the slot within said tubular member, a guide arm,.a sleeve slidably held upon said guide arm, means for connecting said sleeve to said connecting rod, a link extending from said sleeve hav ing its outer end secured to a door, a motor for driving said gear, -manually operated means for starting said motor, means for stopping' said motor, a dog secured to said rod for actuating said stopping means at the end of its forward stroke, a dog secured to said rod for actuating said stopping means at the end of its rearward stroke, said means being located within the path of said dogs, whereby said motor is automatically stopped at the end of the forward and rearward strokes of said'rod, and a spring interposed between said collar and pin whereby said door is held in spring pressed closed condition, v

i. A door opening and closing device in eluding in combination, a pendant shaft, a driving gear secured to the lower end or said shaft, a mangle rack in mesh with said gear, means for slidably supporting said mangle rack, a tubular member pi'votally secured to said rack having a lengthwise extending slot and a terminal collar, a connecta I answer I 4 l l l ing rod havingvone end telescoping Within said tubular vmember, a pin carried by said -connectin, rod and extending through the slot within said tubular member, a guide arm, a sleeve slidably held upon said guide arm, means for connecting said sleeve to said connecting rod, a link extending from said sleeve having its outer end secured to a door, a spring interposed between said collar and pin, a second collar secured to said tubular member intermediate of its ends, and a second spring interposed between said second collar and said pin whereby said rod is yieldingly connected to said tubular member.

In testimony whereof, ll affix my signature in the presence of two Witnesses.

' CLAUDE V, SMQCI'Z. Witnesses:

B. CRAWFORD, BENJAMIN; 

